{% extends "layout.html" %}
{% block title %}Index{% endblock %}
{% block head %}
    {{ super() }}
    <script src="/static/js/app.js"></script>
{% endblock %}
{% block content %}
    消息提示：<p style="color: red">{{ get_flashed_messages()[0] }}</p>
    <br/>
    welcome flask index.html
    <br/>
    <a href="/logout">退出</a>
{% endblock %}